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Sound and Light

Vocabulary

QuestionAnswer
A longitudinal wave that can travel only through matter. Sound wave
The perception of how high or low a sound is; related to the frequency of a sound wave. Pitch
A reflected sound wave. Echo
Something that emits light. Light source
Represents a narrow beam of light that travels in a straight line. Light ray
A material that allows almost all of the light striking it to pass through, and through which objects can be seen clearly. Transparent
A material through which light does not pass. Opaque
Any reflecting surface that forms an image by regular reflection. Mirror
A transparent object with at least one curved side that causes light to change direction. Lens
A convex lens made of transparent tissue located on the outside of the eye. Cornea
The colored part of the eye. Iris
An opening into the interior of the eye at the center of the iris. Pupil
A layer of special light-sensitive cells in the back of the eye. Retina
Created by: Projectile